Mortising-machine.



No. 630,538. Patanted Aug. 8, I899. W. D. HERSCHEL.

MORTISING MACHINE.

(Application filed Sept. :3, 1896.) (No Model.) 3 She ets$haet I.

WITNESSES i ATTORNEY.

THE NORRIS PETER? CO PN'IYI'IIJ LIINOvv WASHINGTON, [IV C.

No. 630,538. Patented A u Qa, |a99.

w. n. HERSCHEL.

MURTISING MACHINE.

(Application filed Sept. 8, 1896.) (No Model.) 3 Sheets-Sheet 2.

WITNESSES r @Qfi 0/ 0. M 4 BY W ATTORNEY. y

no: NORRIS flEr:ns w., Puo'romma. WASHINGTON, n7 1:,

No. 630,538. I Patented Aug. 8, I899. W. D. HERSCHEL.

MOBTISING MACHINE.

(Application filed Sept. 3, 1896.)

WITNESSES:

a. Zfiw THE NoRR s Fcrzns 00.. wnmuma, Wmmna'rou, n. c.

UNITED STATES PATENT OFFICE.

WILLIAM D. HERSOHEL, on PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO JOSEPH0. COLLADAY, OF SAME PLACE.

MORTlSlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 630,538, dated August8, 1899..

' Application filed September 3 1896. Serial No. 604,703. (No model.)

To all whom it may concern:

a citizen of the United States, residing in' the city and county ofPhiladelphia, State of Penn sylvania, have invented a new and useful Improvement in Mortising-Machines, which im;

provement is fully set forth in the following specification andaccompanying drawings.

My invention relates to mortising-machines; and it consists in novelimprovements of the same whereby the vibrations usually incident to theoperation of machines now in use are entirely obviated or reduced to aminimum, the crank-shaft employed being provided with an outside bearingand a counterbalance being carried in the pulley, which is on theopposite side of and about equally distant from a bearing of the shaftfrom the crank instead of at the crank, thereby insuring a much smootherrunning machine, avoiding the employment of a separate counterbalance,and making the machine more compact, while the wrist-pin is mostconvenient of access, so that it may be turned ofi with a shorter toolthan that permitted where a counterbalance exists on each end of saidwrist-pin.

It further consists of novel devices for hold: ing the work in positionduring the operation of the machine.- Figure 1 represents a sideelevation of the upper portion of a morti'sing-machine, showingespecially the crank-shaft and ,its adjuncts, embodying my invention.Fig. 2 represents a side elevation of the pulley and its counterbalance.Fig. 3 represents a section on line a; a, Fig. 2. Fig. 4 represents afront elevation of the lower portion of the machine, showing the work inposition. Fig. 5 represents a side elevation of Fig. 4:.

Similar letters of reference indicate corresponding parts in the severalfigures.

Referring to the drawings, A designates a standard of amortising-machine, the same having attached in any suitable manner tothe upper portion thereof the brackets B and O, the latter beingprovided with the arms D and E, in the upper: portion of which issupported the crank-shaft F, the same also having a bearing in the upperportion of the rmB ' G designates a-loose pulley, and H a tight fpulley,looth of which are mounted upon said fcrank-shaftimmediately over thestandard A, said tight pulley being secured thereto in any suitablemanner.

J designates a counterbalance which is car ried on the pulleyH as partof the web thereof, the remaining portion K of the web being mostplainly shown in Figs. 2 and 3. The

vertical center line of said counterbalance is at substantially the samedistance from and on opposite sides of the bearing of the shaft on thearm E as the center of the pitman M on the crank, and the counterbalancebeing also diametrically opposite the side of the shaft on which thecrank is located.

L designates the crank portion of the shaft F, which is located betweenthe bearings D and E, said crank being in engagement with an end of-theconnecting-rod or pitman M, by means of which the proper operativeportions of the machine are actuated, a detailed description thereofbeing omitted, since the same forms no part of the present invention.

The vertical central line of the arm E is close to or in plane with theside of the standard A, sorthat the balancing-point of the counterweightand pull of the pitman is within said standard.

The operation is as follows: When the pulley H is rotated, which can beefiected by any suitable means, the shaft F and the crank L rotate inunison, and the counterbalance J being always located on its pulleydiametrically opposite to the wrist-pin of crank L it will be seen thata uniformity of movement is secured and a very much smoother runningmachine is obtained than where the balance is carried at the crank, asis customary. The counterbalance may be adjusted with nicety inreference to the Wrist-pin of the crankshaft by turning the pulley thatcarries it, and when the adjustment is accomplished the hub of thepulley is secured to the set place on the shaft by a bolt'or screw, andthus the counterpoise retains its adjustment. It will furthermore beapparent that by counterbalancing the pulley H and mounting the same inthe manner describednamely, directly over the standard A, between thearms B and E, which are on opposite sides of the standardthe saidlocation of the same will have a tendency to reduce to a minimum all thevibrations incident to the shaft, and thereby the machine, which hasheretofore been a great detriment to the successful operation of themachine and resulted in the production of inferior work.

In Figs. 4 and 5 I show a novel attachment to the saddle of the machine,which is designed to hold the work in place on the table. A designatesthe standard, as before, upon which is supported thevertically-adjustable saddle R. On the side thereof are the lugs or eyesQ, which serve as guides for the holders S, which latter pass throughsaid lugs and are held in the desired position by set-screws or similardevices. The upper extremities of each of said holders have thelaterally-deflected portions T, from which depend the members U, whichare adapted to bear upon the Work I and hold the same in the desiredposition. N designates the table for supporting the work, the same beingsecured to a slotted plate which is pivotally mounted on the saddle R,and thus operative independently of the holders S, the latter thus beingadapted to be set relatively to the work, regardless of the adjustedposition of said work.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a mortising-maehine, a standard,aruis rising therefrom and a shaftwith a crank mounted on said arms, in combination with a fixed pulleyand a counterpoise both carried by said shaft directly over saidstandard, said counterpoise being diametrically opposite to thewrist-pin of said crank, and being inclosed within the peripheral rim ofsaid pulley and constituting portion of the web of the latter.

2. A mortisin g-machine having a standard, a saddle verticallyadjustable thereon, eyes on the sides of said saddle, holders verticallyadjustable in said eyes, said holders having laterally-deflected anddepending ends, and a table mounted on a plate pivot-ably eonneeted withsaid saddle and independent of said holders.

\VILLIAM l). IIERSCIIEL.

\Vi tnesses:

HOWARD S. COLLADAY, .ToHN A. WIEDERsHEIM.

